static Program()
        {
            AppDomain.CurrentDomain.UnhandledException += new UnhandledExceptionEventHandler(CurrentDomain_UnhandledException);
        }

        static void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e)
        {
            string strException = string.Format("{0}发生系统异常。\r\n{1}\r\n\r\n\r\n", DateTime.Now, e.ExceptionObject.ToString());
            File.AppendAllText(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "SystemException.log"), strException);
        }